[Terry Miles]

Hi can anyone point in me in the right direction of what I need to download to race in this series tonight for Assetto Corsa? 

Thanks

[Fabian Tiele]

I think you need the current track "Watkins Glen International Boot", as well as ALL cars allowed in the race, this means all Kunos GT3 cars.

Find track here: https://www.simracingsystem.com/showthread.php?tid=3164
The GT3 cars are included in the official Assetto corsa DLCs, so you need to own all of them which include the cars from the series.

You can view a list of the cars and track as well as the current status (owned/missing) in the Assetto Corsa SRS tab when you click on the button in the top right corner of the race you want to race. There is a screenshot attached.